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1.
虎头、克4和Favorita3个马铃薯品种的根、茎、叶外植体在附加NAA和BA各1mg/L的MS培养基上诱导出愈伤组织。在附加0.2mg/LNAA和1mg/LBA的MS培养荐,愈伤组织上分化产生不定芽。1.5-2.5cm高的不定芽在MS+0.05mg/LNAA培养基上生根形成再生完整植株。3个马铃薯品种中,虎头茎的愈伤组织诱导频率最高,达98%。Favorita叶愈伤组织的不定芽分化频率和不定芽生 相似文献
2.
香艳梨离体培养研究 总被引:2,自引:0,他引:2
本试验以香艳梨的茎尖,不带芽茎段,带芽茎段,叶片,叶柄为试材,以1/2MS为基本培养基,分别附加0.5~2.0mg/L的6-卡基氨基嘌呤(6-BA)和0.1mg/L的萘乙酸(NAA)、吲哚乙酸(IAA),2,4-二氯苯氧乙酸(2,4-D)进行离体培养研究。结果表明,试材用0.1%HgCl2灭菌5~6分钟为宜;在7月份接种感染率低,愈伤组织形成较快;茎尖,不带芽茎段,带芽茎段,叶片均可作为离体培养的外植体,叶片的脱分化,分化的效果尤为明显,叶柄不宜作外植体;1/2MS+1.5mg·L-16-BA+0.1mg·L-1NAA有利于脱分化;1/2MS+1.0mg·L-16-BA有利于分化;瓶外生根优于瓶内生根。本试验可为香艳梨的工厂化育苗提供参考。 相似文献
3.
药用植物红芽大戟的组织培养 总被引:12,自引:2,他引:10
针对药用植物红芽大戟结实率和种子萌发率较低的情况,探讨了利用组织培养方法解决生产中繁殖的问题。结果表明,在茎、叶和芽3种外植体中,芽的出愈率最高,愈伤组织褐化率低,生长最好,且易被诱导出不定芽,是较理想的快速繁殖材料;而茎和叶的愈伤组织褐化率高,难以诱导出不定芽。较适宜的诱导愈伤组织的激素组合是6-BA2.0mg/L+NAA0.4mg/L,诱导不定芽的适宜激素组合是6-BA5.0mg/L+NAA0.05mg/L,根的诱导则在1/2MS+NAA0.2+庶糖1.5%+琼脂0.8%培养基上进行 相似文献
4.
在1/3海水培养基上筛选豆瓣菜耐盐变异体 总被引:6,自引:1,他引:6
系统地研究了豆瓣菜(NasturtiumofficainaleR.Br)茎段外植体对6-BA,NAA和2,4-D的反应,确定了MS培养基附加6-BA2.0mg/L,2,4-D0.2mg/L为豆瓣菜愈伤组织诱导,继代培养基;MS培养基附加6-BA4.0mg/L为芽再生培养基;MS基本培养基为植株的生根的扦插繁殖培养基,将325个豆瓣菜茎切段外植体接种到含1/3海水的愈伤组织诱导培养基上,17块外植体 相似文献
5.
外源激素对金钱松胚外植体愈伤组织的诱导及其器官发生的调节作用 总被引:5,自引:0,他引:5
金钱松胚外植体在培养过程中由于外源激素的种类和配比的不同而存在着几种发育途径:直接从胚外植体表面分化不定芽;先诱导愈伤组织,再从愈伤组织分化不定芽;还可由愈伤组织分化出胚状体。激素BA对外植体不定芽的诱导起着关键作用。激素2,4-D则诱导愈伤组织,BA与2,4-D配比恰当诱导的愈伤组织分化出体细胞胚状体。 LP’附加低浓度的BA或KT(<0.5mg/L)促进不定芽茎的伸长; LP’附加浓度的IBA(<0.5mg/L)诱导不定根的发生。愈伤组织在基本培养基浓度为 ×LP’或1×LP’的分化培养基上不定芽诱导率相似。 相似文献
6.
以木立芦荟的叶片、叶鞘、带腋芽的茎段为外植体进行试管培养,结果叶鞘和茎段可诱导形成愈伤组织,腋芽直接萌生。经试验筛选出各增减阶段最适宜的培养基为:⑴愈伤组织诱导,MS+BA2.5mg/L+NAA0.15mgl;⑵腋芽萌生,MS+BA0.3-0.5mg/L+NAA0.15mg/L;⑶丛生芽分化及继代,MS+BA2.0mg/L+NAA0.10mg/L;⑷生根,MS+BA0.3-0.5mg/L+IBA0 相似文献
7.
8.
马铃薯3个品种虎头,克4和Favorita的茎叶外植体在MS+1mg/LNAA+1mg/LBA培养基上形成愈伤组织。在MS+02mg/LNAA+1mg/LBA培养基上,愈伤组织分化产生不定芽。在MS+005mg/LNAA培养基上,不定芽生根形成再生完整植株。02~03cm大小的不定芽反复继代可持续增殖。有3个以上叶片的不定芽在MS+5mg/LBA+005mg/LIBA培养基上和黑暗条件下,在侧芽或顶芽部位形成微型薯。用4%海藻酸钠和2%氯化钙溶液包裹02~03cm大小的不定芽或直径为02~03cm的微型薯制成微芽人工种子和微薯人工种子。在4℃下贮存2个月后,微芽人工种子和微薯人工种子在有菌腐殖土壤中播种21d的萌发率分别是157%和962%。 相似文献
9.
高寒藏药—抱茎獐牙菜组织培养研究及其愈伤组织有效成分的测定 总被引:6,自引:0,他引:6
从抱茎獐牙菜的胚轴、幼叶及未成熟种子诱导出愈伤组织并再生植株,试验选用MS、B5和N6三种培养基,其中以附加2.4-D3.0mg/L+6-BA0.5mg/L的MS培养基诱导率最高;以附加6-BA0.5mg/L+NAA0.2mg/L的MS培养基分化苗频率最高;以附加2.4-D2.0mg/L+6-BA0.5mg/L的MS培养基愈伤组织的生长最好。结果表明,外植体,培养基,激素等对愈伤组织诱导、继代和分化均有明显影响。采用高压液相色谱法(HPLC)测定抱茎獐牙菜愈伤组织中齐墩果酸含量的结果表明,愈伤组织中齐果墩酸含量因培养基、继代培养时间的不同而有所差异 相似文献
10.
火炬松成熟合子胚培养直接器官发生和植株再生 总被引:11,自引:0,他引:11
基因型Hb,Ma和Mc的火炬松成熟合子胚在附加1.0mg/LNAA,4.0mg/LBA,500mg/LLH和500mg/L谷氨酰胺的TE培养基上培养12周后,在子叶和胚轴部位形成不定芽原基。然后将合子胚转移到附加0.5mg//LNAA,0.05mg/LIBA,2mg/LBA,500mg/LLH和500mg/L谷氨酰胺的TE不定芽分化培养基上,6周后分化产生大量不定芽,3种基因型中,Hb的直接不定芽 相似文献
11.
The research of organogenesis and in vitro plantlet regeneration of Populus euphratica Oliver was carried out using the tender shoots from mature tree as initial explants and MS medium as the basic medium. The effects of plant growth regulators (PGR) on the regeneration were compared. The results showed that the concentration of PGR was not strictly required for the organogenesis of the excised organs and callus, but the ratio of BA to NAA was important. Calli could be induced from the excised leaves and stems cultured on the medium with 0.5 mg/L BA and 0.5 mg/L NAA. The embryonic callus could be multiplied in dark on the medium supplemented with 0.25 mg/L BA and 0.5 mg/L NAA. For the adventitious bud regeneration of the leaf and callus, supplement with 0.5 mg/L BA and 0.1 mg/L NAA was appropriate, giving a regeneration frequency of 82.9% and 100%, respectively. The suitable level of BA and NAA for the excised stem's was 0.1 mg/L and 0.01 mg/L respectively, yielding a regeneration frequency of 83 %. Rooting occurred on the MS medium with half strength of macronutrient and addition of 0.015 mg/L NAA, and the rooting rate could reach up to 86.2%. The techniques of somatic cell cloning of P. euphratica was established in vitro. The problems of deterioration of the subcultured shoots were also discussed. 相似文献
12.
本文研究了中国木薯栽培种四种外植体通过器官发生再生植株的条件。结果表明:在MS附加0.05mg/L TIBA,1mg/L BA的培养基上“NZ 188”初步的萌发胚状体“切头”后切口处可直接产生丛芽,出芽率为43%。“SC201”胚状体子叶块在MS附加0.5 mg/L NAA,0.5mg/L BA的培养基上可直接出芽,出芽率为42%,在MS附加0.5mg/L IBA,1.5mg/L BA培养基上·出芽率为31%,AgNO_3和ABA单独使用或配合使用均不利于芽的再生。“NZ188”胚状体下胚轴在MS附加0.5mg/LNAA,0.5mg/L BA的培养基上形成的愈伤组织转入MS附加1mg/L NAA,2mg/L BA的培养基上,3周后大多数愈伤组织有绿点出现、仅4.4%外植体分化出芽。“HZ188”无菌苗茎段接种在MS附加0.05mg/L TIBA,2mg/LBA的固体培养基上,2周后形成大量愈伤组织,4周后仅见一块愈伤组织分化出芽。 相似文献
13.
Efficient plant regeneration was achieved from callus derived from immature-cotyledon explants of oleaster (Elaeagnus angustifolia L.). Calli were obtained on MS media containing 3% sucrose and different concentrations of TDZ. The highest rate of green,
compact and nodular callus was formed on MS medium supplemented with 1 mg/l of TDZ. Shoot organogenesis was achieved when
the callus was transferred onto MS media containing 3% sucrose and BA alone (05–4 mg/l) or BA (0.5 and 1 mg/l) combined with
NAA or IAA (0.5 and 1 mg/l). Maximum organogenesis was obtained with 1 mg/l BA in combination with 0.5 mg/l NAA. Rooting of
the shoots was achieved on MS medium supplemented with 0.2 mg/l IBA. Regenerated plantlets were acclimatized and successfully
transplanted to soil. 相似文献
14.
Hu Zhong Guo Guang-Qin Zhao Dong-Li Li Li-Hua Zheng Guo-Chang 《Russian Journal of Plant Physiology》2001,48(4):453-458
A method for fast plant regeneration via organogenesis directly from Lycium barbarumleaf explants has been developed. The key factor for shoot regeneration was the presence of benzyladenine (BA) in the medium. NAA could only induce root formation and explant callusing. Murashige and Skoog (MS) medium supplemented with 2 mg/l BA and 0.5 mg/l NAA is the most efficient condition for shoot formation, with up to 92.6% shoot regeneration and no callus formation. All adventitious shoots cultured on MS medium supplemented with 1 mg/l IAA formed an extensive root system. Regenerated plants were morphologically normal and were also proved to be diploid (2n = 24). Using the optimized regeneration system, the genetic transformation of L. barbarumwas carried out mediated by Agrobacterium tumefaciensEHA101(pIG121Hm). 11.8% leaf explants produced kanamycin-resistant shoots after infection by A. tumefaciens.The putative transgenic nature of plants was confirmed by GUS assay and PCR analysis. Expression of the nptIIgene in the regenerated plants was also detected by observing the callus formation by leaf pieces on MS medium containing 0.2 mg/l 2,4-D and 0–100 mg/l kanamycin. 相似文献
15.
Callus induction and in vitro plantlet regeneration systems for safflower (Carthamus tinctorius L.) cv. Bhima using root,
hypocotyl, cotyledon and leaf explants were optimized by studying the influence on organogenesis of seedling age, media factors,
growth regulators and excision orientation. Supplementation of the medium with an auxin: cytokinin ratio < 1 enhanced the
growth rate of callus cultures; however, for 2,4-D the ratio was > 1.34–11.41 μM concentrations of growth regulators (IAA,
NAA, BA and Kinetin) in the medium were found effective for callus induction and regeneration in all explants. The calli could
be maintained over 32 months. BA (4.43 μM) combined with casein hydrolysate (10 mg l-1) yielded the highest rate of shoot
production on hypocotyl (3–6) and cotyledon (5–7) explants and cotyledonary derived callus (4–8). More shoots were produced
on explants cut from the most basal region of cotyledons from 5 to 7-day-old seedlings than from older seedlings or more distal
cut sites. Apolar placement of explants, inhibited shoot regeneration. The shoot regeneration potential remained upto 7 months
in calli developed on NAA + BA. Of three media tested, MS was superior to SH-M and B5. Rooting of shoots was not efficient;
42% of the shoots were rooted on MS medium containing sucrose (7–8%) + IAA (2.8–5.7 μM). Capitula induction was observed in
both callus mediated shoots on cotyledons and shoots on rooting medium with sucrose, IAA, NAA and IBA. Well developed plantlets
were transferred to the field with a 34% success rate.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献
16.
We investigated the optimal levels of growth regulators, culture media, and pH on callus growth and organogenesis of in-vitro
cultured ‘Kyoho’ grapes. Calli were induced by culturing leaf blades on an MS basal medium supplemented with 1 mg/IL BA and
0.01 mg/L 2,4-D. In addition, calli originating from the exocarp and mesocarp of grape fruits devel-oped on MS media supplemented
with 0.1 mg/L IAA, NAA, or 2,4-D, or with 0.2 mg/L BA. In testing the potential for plant regeneration from shoot tips on
various media, we found that the Nitsch medium, with I mg/L BA, was optimal for caulogenesis. The type of shoot development
depended on the pH of the medium, with vigorous multiple-shoot devel-opment occurring at pH 6.0, and single shoots forming
at pH 5.0. Finally, we were able to obtain rooted seedlings from the regenerated shoots that had been cultured on 1/4-strength
Nitsch medium supplemented with 0.03 mg/L NAA. 相似文献
17.
Plant regeneration in Arachis pintoi was obtained via two developmental pathways: organogenesis and somatic embryogenesis. Organogenic callus cultures were initiated
from pieces of leaf on MS medium supplemented with NAA or 2,4-D in combination with BA, KIN or 2iP. The most suitable combination
for plant regeneration through organogenesis was an initial medium composed of 10 mg/l NAA+1 mg/l BA followed by transfer
of the callus to a shoot induction medium (MS+1 mg/l BA). Rooting of regenerated shoots was readily achieved by culture on
MS+0.01 mg/l NAA. Embryogenic callus cultures were initiated from pieces of leaf on MS medium supplemented with PICL in combination
with KIN, ZEA, BA or 2iP, and the most suitable combinations were 20 mg/l PICL+1 mg/l BA or 2iP. When pieces of embryogenic
callus were subcultured on MS+1 mg/l BA, somatic embryos were differentiated and developed further into well-developed plants
in MS+1 g/l AC followed by MS medium devoid of plant growth regulators.
Received: 29 April 1999 / Revision received: 24 November 1999 / Accepted: 18 December 1999 相似文献
18.
对亚洲百合的花丝进行离体培养,并利用常规石蜡制片技术对诱导效果最好的材料进行细胞形态学观察,研究花丝在离体培养过程中器官形成的细胞形态学变化。结果表明:花丝在MS+BA0.5 mg/L+NAA0.5 mg/L的培养基上诱导效果最好。离体培养后其形态学下端切口内方的1~3层细胞首先启动脱分化,然后是内方的10~12层细胞,而其他部位的细胞自始至终未启动脱分化。亚洲百合的再生方式为器官发生型,器官通过胚性愈伤组织间接产生,在胚性愈伤组织团表面附近形成芽原基,或在胚性愈伤组织团内部形成根原基,有时同时分别在内、外形成根原基和芽原基后再通过维管组织连接成完整的植株。本研究为亚洲百合的人工调控提供基础理论依据。 相似文献
19.
目前转基因技术已成为植物定向遗传改良的重要手段,而建立稳定高频的离体再生系统是实现遗传转化的基础和前提.本试验以25 ~30 d苗龄的金养麦(Fagopyrum dibotrys)无菌苗叶片、茎节间、叶柄为外植体进行愈伤组织诱导与植株再生研究.结果表明:叶片在MS +2,4-D 4.0 mg/L +6-BA 1.0 mg/L培养基上愈伤组织诱导率达到89%.茎节间在MS +2,4-D 2.0 mg/L +6-BA 2.0 mg/L培养基上愈伤组织诱导率为87%.叶柄在MS +2,4-D 4.0 mg/L +6-BA 2.0 mg/L+ IBA 0.2 mg/L培养基上的最高诱导率仅为54%.愈伤组织分化不定芽的适宜培养基为MS +6- BA2.0 mg/L +TDZ0.2 mg/L +NAA0.2 mg/L;金荞麦不定芽在1/2 MS +NAA 0.5 mg/L的培养基上生根效果最好.组培再生植株经炼苗后移栽到田间成活率达80%以上,且生长表现正常.高频完整再生体系的建立,为金荞麦进一步遗传操作和扩大药材资源奠定了基础. 相似文献
20.
S Baburaj P Ravichandran M Selvapandian 《Indian journal of experimental biology》2000,38(12):1274-1276
In vitro adventitious shoots (about 28) of Clerodendrum inerme were regenerated from leaf segments on MS medium containing BA (4 mg/L). These shoots developed directly from the leaf explants without callusing after 5 weeks. Leaf explant when cultured in MS medium containing BA (2 mg/L) and NAA (0.5 mg/L) developed compact callus that became nodular and regenerated shoots (about 50) after 5 weeks. The in vitro developed shoots were rooted in MS medium supplemented with IAA (2 mg/L). The hardened plantlets were successfully established in the field with 90% survival. 相似文献